Project ideas from Hacker News discussions.

Show HN: I'm a 15 Year Old Wannabe Engineer, This Is a Cycloidal Gearbox I Built

📝 Discussion Summary (Click to expand)

3 Dominant Themes

Theme Supporting Quote
Validation of a young engineer’s work “Nice work!” – WillMorr
Skepticism about “vibe‑coding” lowering the bar “It would still be impressive if it wasn't vibe coded.” – noduerme
Concern about sharing age & the semantics of “engineer” “Don't post your age on the internet :)” – morelikeborelax

🚀 Project Ideas

Generating project ideas…

[MentorLink]

Summary

  • A platform pairing teenage makers with vetted mentors for guided project development.
  • Provides structured mentorship to replace solo vibe‑coding and build real engineering confidence.

Details

Key Value
Target Audience Teens and young adults (13‑19) seeking mentorship in software, hardware, or mechanical projects
Core Feature Matchmaking algorithm with skill‑based mentor profiles and project‑specific curricula
Tech Stack React front‑end, Node.js/Express API, PostgreSQL, WebSockets, OAuth with GitHub
Difficulty Medium
Monetization Revenue-ready: subscription: $9.99/mo

Notes

  • HN fans cited “I’d rather go get a beer” – they’ll value a community that restores the joy of crafting.
  • Could spark discussion on preserving hands‑on learning in an AI‑first era.

[GearCAD Lite]

Summary

  • A browser‑based parametric gear design tool that lets users create and export CNC‑ready gear drawings instantly.
  • Eliminates the need for costly CAD licenses while teaching mechanical fundamentals.

Details

Key Value
Target Audience Hobbyist makers, educators, and teen engineers who want to prototype gearboxes without heavy software
Core Feature Real‑time involute generation, backlash tuning, and SVG/CNC export with built‑in tutorials
Tech Stack SvelteKit, TypeScript, WebGL (Three.js), WASM for geometry calculations, IndexedDB for persistence
Difficulty Low
Monetization Hobby

Notes

  • Commenters like “It would still be impressive if it wasn’t vibe coded” will love a tool that turns AI‑generated ideas into actual CAD assets.
  • Opens conversation about revitalizing traditional engineering skills online.

[SkillBadge]

Summary

  • A digital credential system that awards verifiable badges for completed engineering projects, linked to a public portfolio.
  • Turns project milestones into resume‑worthy proof without relying on age or AI hype.

Details

Key Value
Target Audience Young engineers (13‑25) wanting to showcase tangible work to colleges or future employers
Core Feature Project‑based badge issuance, blockchain‑backed verification, shareable links to Hack Club or personal sites
Tech Stack Next.js, Node.js, IPFS for storage, Ethereum or Polygon for NFT‑style badges, Markdown‑driven portfolio generator
Difficulty Medium
Monetization Revenue-ready: freemium with premium badge packs $4.99 each

Notes

  • HN users emphasized pride in “real” engineering; badges give that validation in a community‑friendly way.
  • Could generate discussion on credentialing alternatives to traditional engineering titles.

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